Specifications
| Sequence | Thr-Lys-Pro-Arg-Pro-Gly-Pro |
| Amino Acids | 7 (tuftsin 1-4 + PGP extension) |
| Molecular Formula | C33H57N11O9 |
| Molecular Weight | 751.87 g/mol |
| CAS Number | 129954-34-3 |
| Form | Lyophilized powder |
| Quantity | 5mg per vial |
Research directions
Three main lines of investigation appear in the published literature. First, enkephalin pathway interactions — Selank’s effects on carboxypeptidase activity and enkephalinase enzyme kinetics in neurochemistry assays. Second, neurotrophic factor expression — BDNF gene expression and GABA receptor modulation in neuronal cultures, plus serotonin metabolite profiling and dopaminergic system interactions. Third, cytokine system research — IL-6 pathway interactions and inflammatory mediator expression in immune cell models, connecting its tuftsin heritage to immunomodulatory function.
Selank vs Semax
Same lab, same PGP tail, different parent sequences. Selank derives from tuftsin (immunomodulatory). Semax derives from ACTH(4-10) (neuroendocrine). The published literature examines them in distinct but overlapping contexts — Selank for immunomodulatory and enkephalinase work, Semax for neurotrophic factor and neuropeptide studies. Heritage Labs USA carries both.
Frequently paired with
Storage
- Lyophilized: -20°C
- Reconstituted: 2-8°C, use within 30 days
For laboratory research use only. Not for human or veterinary use.
Technical reference adapted from the original Heritage Labs USA product listing. This description is not a certificate of analysis or evidence of testing for inventory supplied by this store.





